Greatest come back in sports history? Fuck off. Not Having that. I'm guessing you mean about winning a major, rather than winning from 2 shots back.
Ronnie O'Sullivan had a better comeback than he did (winning the world championship after not playing for a year).. I'd also throw in several Tennis players and Niki Lauda above this achievement.
Now take nothing away from Tiger. I'm glad all the 'will he win another one' talk will cease now. It was great to see him roll back the years.
But dear me..the hyperbole over this is incredible.